Part of the John Deere Repair Manuals.
Panel off, meter in hand, tracing a dead solenoid circuit before lunch: that is the job the John Deere 329D, 333D Operation and Test Manual PDF is built for, 708 pages of skid steer loader diagnostics published as OEM TM11454. Diagnostic trouble codes for the ECU, EMU and HCU open the book, each one paired with the checks that confirm or clear it. Electrical coverage, the longest section, runs from system diagrams through sub-system diagnostics, with hydraulic and hydrostatic theory backing the schematics you follow when boom response goes soft. Measure boom cylinder drift against 13 mm in five minutes, read park brake solenoid Y5 at 7 to 10.5 ohms, and bring hydraulic oil to 43°C (110°F) before you trust a checkout reading. A guessed diagnosis costs you a good pump and a second teardown. Bookmarked and text searchable, this download drops you on the right test page so you condemn the correct component the first time.
Complete the set for your 329D, 333D
What's Inside This John Deere 329D, 333D Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 7-22 | Safety |
| Diagnostic Trouble Codes (DTCs) | 23-182 | Engine Control Unit (ECU) Diagnostic Trouble Codes, Engagement and Monitor Unit (EMU) Diagnostic Trouble Codes, Hydraulic Control Unit (HCU) Diagnostic Trouble Codes |
| Operational Checkout Procedure | 183-200 | Operational Checkout |
| Engine | 201-216 | Theory of Operation, Diagnostic Information |
| Electrical System | 217-466 | System Diagrams, Sub-System Diagnostics |
| Power Train | 467-484 | Theory of Operation, Diagnostic Information |
| Hydraulic System | 485-592 | Theory of Operation, Diagnostic Information |
| Hydrostatic System | 593-668 | Theory of Operation, Diagnostic Information |
| Heating and Air Conditioning | 669-694 | Theory of Operation, Diagnostic Information |
| Dealer Fabricated Tools | 695-708 | Motor Speed Sensor Test Harness, Solenoid Power Harness |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Park Brake Solenoid (Y5) Resistance | 7—10.5 ohms | p. 406 |
| Check Valve (830 kPa) (8.3 bar) (120 psi) | 830 kPa (8.3 bar) (120 psi) | p. 507 |
| Check Valve (35 kPa) (0.35 bar) (5 psi) | 35 kPa (0.35 bar) (5 psi) | p. 507 |
| Hydraulic Oil Temperature (Specification) | 43°C (110°F) | p. 194 |
| Boom Cylinder Drift (maximum) | 13 mm/5 min. (0.5 in./5 min.) | p. 194 |
| Bucket Cylinder Drift (maximum) | 13 mm/5 min. (0.5 in./5 min.) | p. 196 |
| Engine Coolant Temperature (Specification) | 88—94°C (190—200°F) | p. 214 |
| R134a Oil Charge Capacity | 217.4 mL (7.35 fl. oz.) | p. 691 |
| R134a Refrigerant Charge Capacity | 1.36 kg (3.0 lb.) | p. 691 |
| 326D | ||
| 326D Engine Speed Fast Idle | 3000 rpm | p. 214 |
| 329D | ||
| 329D Engine Speed Fast Idle | 3000 rpm | p. 214 |
| 333D | ||
| 333D Engine Speed Fast Idle | 2800 rpm | p. 214 |
John Deere 329D, 333D Common Problems This Manual Covers
John Deere 329D loses power and drops into limp mode a few minutes after startup
Pull the ECU diagnostic trouble codes starting before touching anything else. Verify coolant temperature climbs into the normal 88 to 94 degrees C (190 to 200 degrees F) band on page 214, then confirm fast idle reaches 3000 rpm on the 329D. A restricted air filter switch or hydraulic oil temperature sensor will derate the engine long before the operator feels it.
Manual Section: Engine Control Unit (ECU) Diagnostic Trouble CodesLift arms raise slowly, bucket curl is inconsistent, or loader hydraulics feel mushy under load
Warm the oil first, then tee a gauge into the test port and check system relief against the 23 800 to 24 500 kPa (3450 to 3550 psi) spec on page 565. Low pressure points at a worn pump or a relief valve stuck open. Also inspect the charge circuit check valve rated at 830 kPa (120 psi) on page 507 for debris holding it off its seat.
Manual Section: Hydraulic System Malfunctions p. 565Boom or bucket settles on its own overnight with the machine parked and shut down
Park on level ground, load the bucket, and time the drop with a scale taped to the cylinder rod. Boom drift over 13 mm in 5 minutes (0.5 in./5 min.) fails the checkout, and bucket drift uses the same 13 mm/5 min. limit on page 196. Beyond that, rebuild the cylinder or replace the loader valve spool seals.
Manual Section: Operational Checkout Procedure p. 196One drive motor stalls or the machine pulls hard to one side after a hose replacement
Bleed the repaired line completely, then check the speed sensor signal on the weak side before condemning the drive motor. Remove the sensor, clean the tip, reinstall it, and torque the nut to 15 N.m (133 lb.-in.) per page 452. Cross-check the left and right speed sensor inputs against the HCU code list in the diagnostic section.
Manual Section: Hydraulic Control Unit (HCU) Diagnostic Trouble Codes p. 452Hydraulic oil overheats, warning light comes on, or functions slow down late in the shift
Blow the cooler core out from the fan side with the engine off and the screens removed. Then run the machine and verify hydraulic oil temperature stabilizes near the 43 degrees C (110 degrees F) checkout spec on page 194. If the fan never reverses or the thermal circuit stays dead, chase the fan coil output driver codes in the ECU section.
Manual Section: Hydraulic Oil Temperature (Specification) p. 194Engine cranks slow or will not start at all in cold weather, dash display blank
Load test the battery and pull both ground cables to clean the mating surfaces down to bare metal before blaming the starter. Check the park brake solenoid circuit too: resistance should read 7 to 10.5 ohms on page 406. If cranking is normal but ignition is not, verify the cold start package and block heater operation covered in the engine diagnostics.
Manual Section: Engine Hard to Start or Does Not Start When Cold p. 406Frequently Asked Questions
How do I clear diagnostic trouble codes on a John Deere 329D or 333D?
To clear diagnostic trouble codes, access the service menu on the engagement and monitor unit (EMU) by pressing and holding the MENU button for 5 seconds. Navigate to the 'MAIN MENU CODES' display, press SELECT, then navigate to 'CODES CLEAR' and press SELECT again. p. 384
What does the error code 000091.14 mean for a John Deere 329D or 333D?
Error code 000091.14 indicates that the hand throttle sensor is or has been out of range high. The sensor will not reset the code until it is returned to the slow idle (zero) position or the key switch is cycled. p. 35
How do I clear a throttle sensor fault on a John Deere 329D or 333D?
To clear a throttle sensor fault, first ensure the throttle is in the slow idle (zero) position. If the code persists, cycle the key switch. If the fault remains, perform the diagnostic procedure outlined in the manual, which involves checking the ECU J2 connector (X16) and the throttle sensor connector for damage, corrosion, or debris. p. 31
What is the motor speed sensor nut torque spec on a John Deere 329D, 333D skid steer?
The torque specification for the motor speed sensor nut is 15 N·m (133 lb.-in.). p. 452
What is the required charge pressure for the hydrostatic pump on a John Deere 329D, 333D skid steer?
The charge pressure relief valve pressure should be between 3400—4800 kPa (34—48 bar) (500—700 psi). p. 567
How is this John Deere 329D Technical Manual delivered?
Immediate download of the complete 708-page searchable Technical Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Is printing allowed for this John Deere 329D Technical Manual?
You can. The PDF is unlocked and carries no copy protection, so print the sections you want and keep the file as your backup.
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